MF stands for Medium Folder: a product line positioning itself between the BF (Basic Folder) and the Heavy Folder lines of Extrema Ratio. MF knives employ the LINER-LOCK mechanism and are distinguished for their sturdiness; all are equipped with a glass-breaker. An innovative supplementary screw can be unlocked to enable ne-tuning of the main screw, adjusting opening speed to taste. Hemispheric milling marks on handles make it easier to change from saber-style to reverse grip. Clips are reversible.

Model MF0 is “the little one” amongst MF knives – basically a compact version of the MF1. It retains all the characteristics of MF1 but has a downsized handle and shortened blade. It is a classic Back Up Knife or EDC Knife.

Available with Tanto oder Drop Blade and in black or "desert warfare" finish.